CVE-2020-26310 GHSL-2020-305: Regular Expression Denial of Service (ReDoS) in Pure JavaScript HTML5 Parser
Attackers can cause denial of service in applications using Validate.js by exploiting vulnerable regular expressions in the HTML5 parser.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-26310?
CVE-2020-26310 is a high-severity denial of service vulnerability in blowsie Pure-JavaScript-HTML5-Parser, published on 26 Oct 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Validate.js provides a declarative way of validating javascript objects. All versions as of 30 November 2020 contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). As of time of publication, it is unknown if any patches are available.
Weakness: CWE-1333
Which versions are affected by CVE-2020-26310?
How do I fix CVE-2020-26310?
No fix has been published for CVE-2020-26310 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-26310 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-26310 exists.
Sources
Also known as GHSA-fw2v-v7vp-pccq.